Here at iFixit, we are unabashed lovers of screws—they epitomize everything that's good about repair. Which is probably why Oculus VR sneaked this maddeningly uncooperative non-screw in here, just to mess with us.

Actually, this could just be a minor manufacturing snafu. Apart from the lack of threads, this little guy is identical to two other (perfectly ordinary) Phillips screws nearby.

If you happen to find yourself disassembling a DK2 in the future, do let us know—we want to compare notes (and steal your screws).